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Model Number

HT645B01

HIGH TEMPERATURE 4-20 MA OUTPUT ACCELEROMETER

Revision: A
ECN #: 49753

P erfo rm an ce

EN G L ISH

SI

Measurement Range

0.0 to 5 g rms

0.0 to 49 m/s² rms

[1]

Output

4-20 mA

4-20 mA

Frequency Range(± 10 %)

180 to 300 kcpm

3 to 5 kHz

[2][3]

Broadband Resolution

0.025 g rms

0.24 m/s² rms

[4]

Non-Linearity

± 1 %

± 1 %

En viro n m en tal

Temperature Range

-40 to 257 °F

-40 to 125 °C

Enclosure Rating

IP68

IP68

Electrical

Excitation Voltage

12 to 30 VDC

12 to 30 VDC

Load Resistance

50(Vs-12) Ohm

50(Vs-12) Ohm

Settling Time(within 2% of value)

< 15 sec

< 15 sec

Electrical Isolation(Case)

> 10

8

 Ohm

> 10

8

 Ohm

P h ysical

Size - Hex

1.0 in

25.4 mm

Size - Height

2.6 in

66 mm

Weight

4.7 oz

131 gm

Mounting Thread

1/4-28 UNF

No Metric Equivalent

Mounting Torque

3 to 5 ft-lb

4 to 7 Nm

Sensing Element

Ceramic

Ceramic

Sensing Geometry

Shear

Shear

Housing Material

Stainless Steel

Stainless Steel

Sealing

Welded Hermetic

Welded Hermetic

Electrical Connector

2-Pin MIL-C-5015

2-Pin MIL-C-5015

Electrical Connection Position

Top

Top

Electrical Connections(Pin A)

4-20 mA Pos (+)

4-20 mA Pos (+)

Electrical Connections

(Pin B)

4-20 mA Neg (-)

4-20 mA Neg (-)

[5]

All specifications are at room temperature unless otherwise specified.
In the interest of constant product improvement, we reserve the right to change specifications without notice.

ICP

®

 is a registered trademark of PCB Piezotronics, Inc.

M

 - Metric Mount

Supplied Accessory: Model M081A61 Mounting Stud 1/4-28 to M6 X 1 (1)

RV

 - Buffered Analog Signal Output - 100 mV/g

(±20%)

Electrical Connector

3-Pin MIL-C-5015

3-Pin MIL-C-5015

Electrical Connections

4-20 mA Pos (+)

4-20 mA Pos (+)

Electrical Connections

4-20 mA Neg/Signal Output

Neg

4-20 mA Neg/Signal Output

Neg

Electrical Connections

Signal Output Pos

Signal Output Pos

OP TION A L  VERSION S

Optional versions have identical specifications and accessories as listed for the standard model

except where noted below. More than one option may be used.

N OTES:

[1]Conversion Factor 1g = 9.81 m/s².
[2]Current will fluctuate at frequencies below 5 Hz.
[3]1Hz = 60 cpm (cycles per minute).
[4]Typical.
[5]See PCB Declaration of Conformance PS039 for details.

Date: 07/24/2019

Date: 07/24/2019

Date: 07/24/2019

Date: 07/24/2019

38985

Entered: LK

Engineer: NJF

Sales: MC

Approved: NJF

Spec Number:

P h o n e: 800-959-4464
F ax: 716-684-3823
E-M ail: im i@ p cb .co m

3425 Walden Avenue, Depew, NY 14043

SU P P L IED A C C ESSORIES:

Model M081A61 Mounting Stud 1/4-28 to M6 X 1 (1)
Model 081A40 Mounting Stud (1)
Model ICS-4 NIST-traceable single-axis amplitude response calibration from 0 cpm (0 Hz) to
upper 10% frequency for 4 - 20 mA output vibration sensor (1)

Summary of Contents for IMI SENSORS HT645B01

Page 1: ...ut Accelerometer Installation and Operating Manual For assistance with the operation of this product contact PCB Piezotronics Inc Toll free 800 959 4464 24 hour SensorLine 716 684 0001 Fax 716 684 382...

Page 2: ...ty regimen When in doubt about a calibration cycle a good rule of thumb is to recalibrate on an annual basis It is also good practice to recalibrate after exposure to any severe temperature extreme sh...

Page 3: ...rchase Order should include authorization to proceed and return at current pricing which can be obtained from a factory customer service representative Contact Information International customers shou...

Page 4: ...isclosure Table Pb Hg Cd Cr VI PBB PBDE O O O O O O PCB X O O O O O O O O O O O X O O O O O O O O O O O O O O O O O O O O O O O O O X O O O O O O O O O X O O O O O O O O O O O X O O O O O X O O O O O...

Page 5: ...e O O X O O O Wires O O O O O O Cables X O O O O O Plastic O O O O O O Solder X O O O O O Copper Alloy Brass X O O O O O This table is prepared in accordance with the provisions of SJ T 11364 O Indica...

Page 6: ...mA Sensor Operating Guide with Enclosed Warranty Information 3425 Walden Avenue Depew New York 14043 2495 Phone 716 684 0003 Fax 716 684 3823 Toll Free Line 1 800 959 4IMI AND INSTRUMENTATION FOR MACH...

Page 7: ...ension Drawing Page 4 Operation and Wiring Page 5 Standard Wiring Taking Measurements RV Option TO Option Installation Page 9 Direct Adhesive Mount Standard Stud Mount Adhesive Stud Mount Magnetic Mou...

Page 8: ...ies Please refer to specific specification sheets for further details General Features Expanded Temperature Range from 40 C to 125 C Imbedded Piezoelectric Accelerometer for improved accuracy and freq...

Page 9: ...SENSORS A Dimension Drawing ND INSTRUMENTATION FOR MACHINE CONDITION MONITORING Inch mm PAGE 4...

Page 10: ...input from the power supply to Pin B or Blue wire of the sensor Figure 1 wiring loop powered Figure 2 wiring loop powered DC source If using a standard DC power supply install either an ammeter and or...

Page 11: ...pk 0 25 ips pk 0 5 ips pk 12 0 0 25 ips pk 0 5 ips pk 1 0 ips pk 15 75 0 37 ips pk 0 73 ips pk 1 47 ips pk 20 0 5 ips pk 1 0 ips pk 2 0 ips pk Measured mA 641BX0 641BX1 641BX2 4 00 0 0 ips rms 0 0 ip...

Page 12: ...zers can use this vibration signal for further analysis Figure 3 RV wiring For integral cable sensors RED 4 20mA Positive BLACK 4 20mA Negative same as green GREEN RV Acceleration Negative same as bla...

Page 13: ...ture sensor monitors the environment internal to the sensor housing and is situated at approximately mid level Figure 4 TO wiring For integral cable sensors RED 4 20mA Vibration Positive BLACK 4 20mA...

Page 14: ...hesive mounting base and magnetic mounting base Since the frequency response is limited to 1 kHz on the 640 641 any of the four methods can be used without seriously affecting the data values The moun...

Page 15: ...surface with a minimum finish of 63 in 0 00016 mm is recommended If it is not possible to properly prepare the machine surface consider using an adhesive mounting pad as a possible alternative Inspec...

Page 16: ...ency response Contact the factory for recommended epoxies This method involves attaching a base to the machine surface then securing the sensor to the base This allows for easy removal of the accelero...

Page 17: ...a steel mounting pad to the test surface This provides a smooth and repeatable location for mounting Figure 9 magnet types Dual Rail Magnet Flat Magnet Sensor Stud Mounts to Top Surface of Magnet ALL...

Page 18: ...ent High voltage electrostatic discharge ESD can damage electrical devices Similar to a capacitor a cable can hold a charge caused by triboelectric transfer such as that which occurs in the following...

Page 19: ...ervicing at no charge Before returning the unit please consult a factory IMI applications engineer concerning the situation as certain problems can often be corrected with simple on site procedures Re...

Page 20: ...e your purchase price refunded IMI offers to all customers at no charge 24 hour phone support This service makes product or application support available to our customers day or night seven days a wee...

Page 21: ...ed In the interest of constant product improvement we reserve the right tochange specifications without notice ICP is a registeredtrademarkof PCB Piezotronics Inc M Metric Mount SuppliedAccessory Mode...

Page 22: ......

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